Answer: B
Explanation: All living things have one or more cells
Its so small can u make it bigger?
Answer:
The functional units of dna that contain the instructions for making one or more proteins are the "Genes".
This is an example of a substitution mutation. Substitution means changing a base pair in a codon, with another base pair. For example, in this case, Thymine was replaced with Adenine. In Deletion, insertion, and copying, a change in the base pair occurs due to deletion, addition or copying of base pair itself.